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Footnotes
Abbreviations: ∆A, change in optical density; a, extinction coefficient of chromophore; A, light attenuation coefficient; B, path length factor; c, concentration of chromophore; cox, co-oximetry; CPB, cardiopulmonary bypass; DHCA, Deep Hypothermic Circulatory Arrest; HbO2, oxyhemoglobin; HHb, deoxygenated hemoglobin; L, length between light entry and exit; LDF, Laser-Doppler flowmeter; NIRS, near-infrared spectroscopy; nm, nanometer; rSO2, regional oxygen saturation; rScO2, regional cerebral oxygen saturation; SD, standard deviation; SjO2, jugular bulb oxygen saturation; SRS, spatially resolved spectroscopy; THb, total hemoglobin; tNIRS-1, tissue oximeter using time resolved spectroscopy; TOI, tissue oxygen index